From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Hartgers Subject: [patch 0/2] sata_via: bugfixes for vt6420 and vt6421 Date: Sun, 17 Jan 2010 00:56:53 +0100 Message-ID: <20100116235653.898098245@gmail.com> Return-path: Received: from ey-out-2122.google.com ([74.125.78.25]:31424 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750823Ab0APX6v (ORCPT ); Sat, 16 Jan 2010 18:58:51 -0500 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-kernel@vger.kernel.org, Jeff Garzik Cc: linux-ide@vger.kernel.org Dear all, The following patches fix two bugs I encountered in the sata_via driver. - DMA/PIO timings for the pata slave drive on a vt6421 were not handled correctly. - ATAPI DMA corruption on a vt6420. At least for some burners, the vt6420 needs a small delay between sending the CDB and starting DMA to prevent silent data corruption. I found this solution by experimentation and while it works great for me, it might not work for everyone. Reports of success or failure are appreciated. Some more background is included in the individual patches. Groeten, Bart --